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A ridge vent is a type of vent installed at the peak of a sloped roof which allows warm, humid air to escape a building's attic. Ridge vents are most common on shingled residential buildings. Ridge vents are also used in industrial warehouses to help release the hot air and help circulate comfortable air inside the building .
John T. O'Hagan (April 7, 1925 – January 2, 1991) was appointed the 22nd Fire Commissioner of the City of New York by Mayor John V. Lindsay on October 11, 1973, and served in that position throughout the Administration of Mayor Abraham D. Beame until he was replaced by incoming Mayor Edward I. Koch on January 17, 1978.
An attic fan installed underneath a roof. A powered attic ventilator, or attic fan, is a ventilation fan that regulates the heat level of a building's attic by exhausting hot air. A thermostat is used to automatically turn the fan off and on, while sometimes a manual switch is used. An attic fan can be gable mounted or roof mounted. Additional ...
Patrick O'Hagan died in Queensland, Australia. His wife Ellen died in 2012. His wife Ellen died in 2012. His son Seán Patrick Michael Sherrard better known as Johnny Logan is a famous Australian-born Irish singer and composer and winner of the Eurovision Song Contest twice with " What's Another Year " in 1980 and " Hold Me Now " in 1987. [ 1 ]
The majority of guidance available for design of heat and smoke building vents installed in buildings is restricted to nonsprinklered, single-story buildings. [4] This is partly a historical consequence of the installation of heat and smoke vents following the August 1953 General Motors, Livonia, MI major fire in a nonsprinklered manufacturing facility which effectively stopped the production ...
Ventilation on the downdraught system, by impulsion, or the 'plenum' principle, applied to schoolrooms (1899) Natural ventilation is the ventilation of a building with outside air without using fans or other mechanical systems. It can be via operable windows, louvers, or trickle vents when spaces are small and the architecture permits.
O'Hagan is an Irish surname originally from the pre 10th century Old Gaelic Ó hAodhagáin, meaning perhaps "Little Fire from the Sun", being derived from Aodh the pagan sun god and Og meaning young, they are the "male descendant of Aodh" the pagan sun god, a personal name meaning "fire". [1]
To allow a single roof penetration as permitted by local building code, sub-vents may be tied together inside the building and exit via a common vent stack, frequently the "main" vent. Adding a vent connection within a long horizontal run with little slope will aid flow, and when used with a cleanout allows for better serviceability.
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